/**
 * Anthropic-to-OpenAI Protocol Translation Proxy
 *
 * Translates Claude CLI's Anthropic Messages API requests into OpenAI Chat Completions API format.
 * Used in direct API key mode to bypass CLIProxy entirely.
 *
 * Request flow:
 *   Claude CLI (Anthropic format) → this proxy → OpenAI-compatible endpoint
 *
 * Response flow:
 *   OpenAI-compatible endpoint → this proxy (translates SSE) → Claude CLI (Anthropic format)
 *
 * Handles:
 *   - Path rewriting: /v1/messages → /v1/chat/completions
 *   - Auth translation: x-api-key → Authorization: Bearer
 *   - Request body: Anthropic messages/tools/system → OpenAI format
 *   - Streaming response: OpenAI SSE chunks → Anthropic SSE events
 *   - Non-streaming response: OpenAI completion → Anthropic message
 *   - Tool calls and tool results
 */
export interface AnthropicToOpenAIProxyConfig {
    /** The user's OpenAI-compatible endpoint base URL (e.g., http://api.drlj.cn/openai) */
    targetBaseUrl: string;
    /** Bearer token for the target endpoint */
    apiKey: string;
    /** Enable verbose logging */
    verbose?: boolean;
    /** Request timeout in ms */
    timeoutMs?: number;
    /**
     * Use OpenAI Responses API (default: true).
     * When true: uses /v1/responses with codex-specific params (prompt_cache_key, reasoning.summary, session headers).
     * When false: uses /v1/chat/completions only (generic OpenAI-compatible endpoints).
     */
    useResponsesApi?: boolean;
}
export declare class AnthropicToOpenAIProxy {
    private server;
    private port;
    private readonly config;
    private readonly httpAgent;
    private readonly httpsAgent;
    private readonly maxNetworkRetries;
    /** Track last Responses API response ID for conversation chaining */
    private lastResponseId;
    constructor(config: AnthropicToOpenAIProxyConfig);
    private log;
    private isRetryableNetworkError;
    private isRetryableStatusCode;
    private getRetryDelayMs;
    start(): Promise<number>;
    stop(): void;
    private readBody;
    private handleModelsRequest;
    private handleRequest;
    private handleStreaming;
    /** For non-streaming requests: call API with stream=true, collect text, return Anthropic JSON */
    private handleNonStreamingViaStream;
}
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